Interaction of soliton-like beam in a diffusive nonlinear planar waveguide

被引:9
作者
Bertolotti, M
Voti, RL
Marchetti, S
Sibilia, C
机构
[1] Dipartimento di Energetica, Univ. di Roma La Sapienza, 00161 Roma
关键词
D O I
10.1016/S0030-4018(96)00514-7
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A laser beam propagating in a medium causes a temperature rise, as a consequence of light absorption. This phenomenon provides a variation of refractive index governed by the heat diffusion in the material. The coupling between the nonlinear electromagnetic wave equation and the heat diffusion equation has been investigated for a weakly absorbing material. In this hypothesis, the possibility of stabilization of propagation through self-focusing in a planar waveguide has been studied. A numerical model of propagation in planar waveguides has been developed, Although stable propagation is not achieved, a quasi-confined propagation on a short distance is obtained. The interaction between quasi-soliton beams with different phase relationship has been investigated.
引用
收藏
页码:578 / 586
页数:9
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